यदि (p=-1), तो \(2p^4-3p^3+4p^2-5\) का मान क्या होगा?
If (p=-1), what is the value of \(2p^4-3p^3+4p^2-5\)?
Explanation opens after your attempt
B. (4)
Concept
Substitution gives (2+3+4-5=4). Even powers of (-1) are (1), and odd powers are (-1).
Why this answer is correct
The correct answer is B. (4). Substitution gives (2+3+4-5=4). Even powers of (-1) are (1), and odd powers are (-1).
Exam Tip
मान रखने पर (2+3+4-5=4) मिलता है। (-1) की सम घात (1) और विषम घात (-1) होती है।
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